Determination of the Second Homology and Cohomology Groups of a Space by Means of Homotopy Invariants
Proc Natl Acad Sci U S A
.
1946 Nov;32(11):277-80.
doi: 10.1073/pnas.32.11.277.
Authors
S Eilenberg
1
,
S Maclane
Affiliation
1
Department of Mathematics, Indiana University.
PMID:
16588731
PMCID:
PMC1078947
DOI:
10.1073/pnas.32.11.277
No abstract available